@ibyar/elements
v2.5.0
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Ibyar elements, hold info about HTMLElements class, attributes and tag name
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Ibyar Elements
Ibyar elements, hold info about HTMLElements class, attributes and tag name.
Install
npm i --save @ibyar/elements
yarn add @ibyar/elements
Try the parser
- Ibyar Elements parser: https://ibyar.github.io/astexplorer/
Example
import { hasNativeAttr } from '@ibyar/elements';
const div = document.createElement('div');
console.log(hasNativeAttr(div, 'for'));
import { htmlParser } from '@ibyar/elements';
const template = `<div #div name="data-div" (click)="onDivClick($event)">
<person-view [name]="alex" age="35" @edit="onPersonViewClick($event)" />
</div>`;
const htmlNode = htmlParser.toDomRootNode(template)(template)
console.log(htmlNode);
By default the parser has no registered info about structural/attributes directive.
You need to register them with inputs and outputs.
import { directiveRegistry } from '@ibyar/elements';
/**
* register a structural directive, with name '*notifier' , the name must start with '*'.
* with inputs `message` and `color`,
* and output `action`.
*/
directiveRegistry.register('*notifier', {
inputs: ['message', 'color'],
outputs: ['action'],
});
/**
* register an attributes directive with name 'appConfirm'
*/
directiveRegistry.register('appConfirm', {
inputs: [],
outputs: [],
});
note:
the attributes directive has higher priority than regular element attributes, so if you registered an attributes directive with a name like 'style', 'class', 'id', 'name', etc... it will interpreted as an attributes directive and will be remove from the element attributes list.
import { directiveRegistry } from '@ibyar/elements';
/**
* register an attributes directive with no input and no output.
*/
directiveRegistry.register('style');
supported syntax for directives
<!-- short hand -->
<div *for="let user of users"></div>
<div *if="user.name == 'ali'"></div>
<!-- full description -->
<div *for let-user [of]="users"></div>
<div *if [if]="user.name == 'ali'"></div>
<!-- tag name as directive -->
<for let-user [of]="user">....</for>
<if [if]="user.name == 'ali'">....</if>
<!-- control flow syntax -->
@if (a > b) {
<p>{{a}} is greater than {{b}}</p>
}
@if (a > b) {
{{a}} is greater than {{b}}
} @else if (b > a) {
{{a}} is less than {{b}}
} @else {
{{a}} is equal to {{b}}
}
@for (item of items; track item.id) {
{{ item.name }}
}
@for (item of items; track item.name) {
<li> {{ item.name }}</li>
} @empty {
<li aria-hidden="true"> There are no items. </li>
}
@switch (userPermissions) {
@case ('admin') {
<app-admin-dashboard />
}
@case ('reviewer') {
<app-reviewer-dashboard />
}
@case ('editor') {
<app-editor-dashboard />
}
@default {
<app-viewer-dashboard />
}
}
<!-- Local template variables -->
@let name = user.name;
@let name = user.name, age = user.age; <!-- comma separated variable declaration -->
@let greeting = 'Hello, ' + name;
@let data = data$ | async;
@let pi = 3.1459;
@let coordinates = {x: 50, y: 100};
@let longExpression = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit ' +
'sed do eiusmod tempor incididunt ut labore et dolore magna ' +
'Ut enim ad minim veniam...';